• Solution for Air Inlet / Weather Hoods

    Solution for Air Inlet / Weather Hoods

    Our Innovative Replacement Solution for Air Inlet / Weather Hoods

    What level of protection do you believe a weather hood gives your filter system, and what impact are the hoods having on the airflow within the housing? Veotec, a subsidiary of the Wozair Group, believe that these are compromises that you don't need to make, our vertical louvres provide unsurpassed levels of water removal, down to 2µm water droplets. Weather hoods have no efficiency against airborne water droplets, they are only effective against falling rain. Additionally, due to the continuous nature of a vane separator, compared to the segmented nature of weather hoods, the airflow into the filter house is much less turbulent and the velocities are much more even. Traditionally gas turbine filter houses are fitted with weather hoods for the first stage of protection against the weather. Primarily their function is to remove bulk water from rain fall and snow protection. However, we believe there is a better more economical solution. Flow through traditional weather louvres                                  Flow through Veotec vertical louvres   These CFD images show incoming air velocity for traditional weather hoods and vertical louvres/inertial vane separator using identical air volume and duct dimensions. This comparison clearly shows traditional weather hoods have radical fluctuations in velocity compared to vertical louvers/inertial vane separators. The highest velocity for weather hoods is typically observed nearest to the rear of the hoods and biased across the inlet to the lowest hoods. This means the face area of the air intake does not get an even distribution of air flow resulting in the subsequent increased likelihood of water ingress and a varied distribution of air within the filter house across all stages of filtrations as certain sections become more heavily loaded than others. A common solution that is deployed to combat the aforementioned affects weather hoods is the installation of drift eliminator panels to remove some of the droplets that would normally bypass the weather hoods. The efficiency of water droplet removal is linked to velocity therefore in a similar fashion to those reasons stated above, the majority of drift eliminator panels will have minimal effectiveness. Such drift eliminator panels shall also bare a significant additional pressure loss restriction to the system. By installing Veotec’s vertical louvres/inertial vane separators in place of weather hoods the air velocity and distribution is uniform across the full face of the filter house giving predictable performance against water ingress. In independent testing this equipment has been shown to remove 97% of 2 µm water particles and 100% of 5 µm water particles with a pressure loss of only 20Pa at 3.0 m/sec velocity and even greater performance at higher velocities.     Rain and traditional weather hoods                           Rain and Veotec vertical louvers/inertial separators   Furthermore, filter houses with fitted with weather hoods lacking in sufficient drainage facilities are often subject to an inherent problem whereby rain cascades down the front of the hoods. The collected water generally drops from one hood down to the next hood multiplying the water from hood to hood down the face of the inlet. A simple rain shower quickly becomes a waterfall across the hoods. The first few rows of hoods may resist ingress however the lower sections of the intake shall eventually can become overwhelmed by the volume of water leading to further ingress into the filter house often to the detriment of the pre-filters leading to increased maintenance as the bottom rows of filters quickly get saturated. Filters exhibit a spike in restriction prematurely, leading to reduced filter efficiency, shortened filter service life and contamination getting washed through the filters. Due to the design of the vertical louvres/inertial vane separators, the amount of water that can be removed is very high and does not vary across the face area of the inlet. In independent test results the water handling capacity of this equipment was 36 litres (9.45 galls) per minute per square metre of product.   Photographs from inside a typical filter house fitted with traditional filter hoods Photographs from inside a typical filter house 12 months after having vertical louvres/inertial vane separators fitted The water ingress and air velocity variations can also cause several problems for the air filters. Filters are tested in a controlled laboratory setting with relatively uniform velocity conditions and generally stable humidity. These filters are given performance ratings. Those standardized ratings help end users select appropriate performance characteristics to suit their needs. Unfortunately, many filters will experience reduced efficiency and lower dust loading capacity at higher velocities. A F9 filter at 4 m/s (787 ft./min) may drop a grade or two at 5 m/s (984 ft./min.) Dry filters generally maintain efficiency as reported - Standardized tests classify dry filters in a dry laboratory environment with dry dusts. Saturating filters will change the performance. Filters capture and remove particulate from the air. Filters eventually load and either need cleaning or replacement. Some of the contaminants captured on the filters are water soluble. The addition of water or moisture into an installation converts some particles into a solution which is detrimental to the performance of the filtration and or subsequent systems and processes, such as saline solutions which can cause corrosion. Some soluble solutions can seep through most air filters like coffee flows through a coffee filter. The contaminated solution migrates through the filter from the dirty air side to the clean air side where it can dry out and become airborne later. Carrying the contamination into the turbine or other equipment downstream of the filters. Some of the contaminants captured on the filters absorb moisture and swell up like a sponge. Some filters use hydrophilic fibres that also absorb water. These hydrophilic particles and fibres grow and blind off the filter media when wet causing the restriction to increase. The air simply must work harder to get past the larger particles. The level of dust loading and the amount of precipitation bypassing the hoods will impact the intensity of the restriction spikes and the time required to recover after a precipitation event. Wet particles and fibres may also contribute to premature filter media breakdown in freezing environments. Hydrophilic particles hold moisture next to the filter fibres. The moisture then expands during freeze events causing microscopic ruptures throughout the filter surface. Repeated wetting and freezing events will result in performance degradation. End of filter life is normally observed as increasing frequency and intensity of restriction and precipitation induced restriction spikes. Dry filters will perform better and last longer. For more information please contact    

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  • Thermoplant – Your Questions Answered

    Thermoplant – Your Questions Answered

    Thermoplant – Your Questions Answered

    Who are Thermoplant? Thermoplant are a private company based in Hull who began trading in 1995. Directors of Wozair, Simon Collins and Paul Azzopardi now join Tony Williams and Kevin Atkinson as Directors of Thermoplant after acquiring majority shares in July 2019. Thermoplant will continue to operate from their existing premises.   What do they do? Thermoplant are specialists in the Design and Manufacture of high quality Heating, Ventilation and Air Conditioning/Refrigeration Systems for the Onshore and Offshore Petrochemical Industries including other similar industries such as Naval and Military. Other services include installation, maintenance and commissioning including replacement parts and offering a 24 hour call out service to their clients.   What products do they specialise in? Thermoplant products include a standard range of industrial air conditioning equipment, as well as ATEX certified pressurisation and ventilation fans. They offer complete ATEX certified HVAC/Refrigeration systems including Chilled Water and DX systems including general industrial safe area HVAC systems for all applications.   Who have they worked with previously? Previous clients include Ferguson Modular (2000 – present), Labtech Services (1996 - 2005), OEG Offshore (1996 - 2015), HB Rentals (1996 – present), Hobre Instruments (1998 – present), ABB Analytical (1997 – present), Thyson Technology (2000 – present), Cullum Detuners (1998 – present), Servomex (1996 – present) and Mech-Tool Engineering Limited (1998 – present).   What will they bring to the Wozair Group? Thermoplant's areas of expertise include refrigeration equipment, control panels and more compact type packaged units, whereas Wozair specialise in air management, dampers and intake equipment. Together the companies will provide an unparalleled level of supply and service to customers in the HVAC market with both companies benefitting from the synergies that will create growth, security and cooperation.

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  • Growth for Jet in 2019

    Growth for Jet in 2019

    Jet Environmental Continue to Grow in 2019

    It has been an exciting start to the year for Jet Environmental who form part of the Wozair Group. On the back of last year’s amazing performance, the Jet team has been bolstered with two key appointments, HVAC Engineer Jonathan Olatunbosun joins them following his MSc graduation in Mechanical Engineering and Sarah Martin joins as Contracts Engineer from Flakt. Business continues to grow in 2019 with over £1m new business in diverse sectors of fine wine storage for Great Bear Logistics, pharmaceutical with Fresnius Kabi and warehousing for engineering giant Meggit. “Our challenge in the coming months is to maintain the momentum and we are working hard to secure new business. Uncertainty seems to be the theme of the UK at present, but we are well placed for another successful year.” Jason Hibbs - Managing Director, Jet Environmental. Jet Environmental based in Warwickshire, design, manufacture, install and maintain heating, ventilation and cooling systems in industrial, warehouse and commercial buildings. Since July 2016 Jet Environmental Systems and sister company Jet AHU has been a wholly owned subsidiary of Wozair Limited facilitating a growing footprint of operation in Europe, Middle East, Australia, Singapore and USA. We wish the new appointments at Jet all the best in their new positions and look forward to an exciting year ahead.

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  • MFD Fire Test with Petz Actuator

    MFD Fire Test with Petz Actuator

    The Wozair MFD achieves A-60 fire test rating with Petz actuator

    The Wozair MFD Achieves A-60 Fire Test Rating with Petz Actuator Wozair is delighted to have completed a series of successful fire tests on their MFD (Marine Fire Damper) using the Petz QT electric actuator. The damper has achieved an A-60 fire test rating in accordance with the IMO FTP Code 2010. These fire tests give Wozair the ability to offer fire dampers at 1220mm x 1525mm (duct width x height) as a single module. The same rating is achieved in both deck and bulkhead configurations. This and other developments underpin Wozair’s commitment to being a market leader in the offshore HVAC industry. You can view footage of the testing below. [video width="608" height="1080" mp4=""][/video]

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  • Wozair USA Secure Large Order

    Wozair USA Secure Large Order

    Wozair USA Secure Large Order with Gulf Island for Moisture Eliminators Manufactured by Veotec – a Subsidiary of The Wozair Group

    Wozair USA Secure Large Order with Gulf Island for Moisture Eliminators Manufactured by Veotec – a Subsidiary of The Wozair Group Wozair USA secured the contract for twenty Moisture Eliminators with Gulf Island in April last year after they won the order to build ten new tug boats for Bay-Houston Towing Co. Bay Houston has been involved in ships and boats in Texas waters since 1875 and is the fourth largest harbour tug fleet in the USA. The bespoke tug Louvres manufactured by Veotec are designed to prohibit the ingress of wind driven rain into the ventilation system, thus protecting operators, equipment and the environment. The tugs, which are primarily designed for escort duties, are powered by Caterpillar (EPA Tier 4) engines and Schottel Z-drive units that allow the tug to generate bollard pulls of 80 tonnes and minimum speeds of 30 knots. Gulf Island has now delivered the first of the tugs to Bay Houston Towing with another nine to follow in the coming months. Wozair USA are delighted to have secured the project, which is just one of a number they have recently secured in North and South America. The increase in recent projects has led to further growth for the company, resulting in their best year to date in 2018.

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  • Jet Fly High in 2018

    Jet Fly High in 2018

    Jet Environmental is a small business acquired by Wozair in 2016. Based in Solihull in the West Midlands the team of 10 design and install temperature control systems in large volume, open plan industrial, commercial and pharmaceutical buildings. We use the latest air induction technology and work with blue chip businesses and leading consultants and contractors. Our small tight knit team mixes with some illustrious company; this year we have installed systems for Nestle, BooHoo, Pretty Little Thing, NHS and Hyundai to name a few. A total of 20 projects with a value over £9m and profit over £3m makes 2018 Jet’s most successful to date! Next year we are poised for more business and have bolstered our team with an additional project engineer and HVAC system design engineer. We would like to congratulate everyone involved in this achievement and look forward to seeing what 2019 brings. Jason Hibbs - Director, Jet Environmental

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  • New Products Launched!

    New Products Launched!

    The Wozair Group launch two new products at ADIPEC 2018.

    The Wozair Group are delighted to reveal they launched two new products at ADIPEC 2018 hosted in Abu Dhabi this month, extending their range of ever-growing innovative products. The products offer dust control solutions, protecting intake systems from the ingress of harmful particulate in harsh environments. The Spin tube is an inertia self-cleaning, high efficiency filter which boasts improved pressure loss under normal operating conditions. It is made from polypropylene, however fire-resistant alternatives can be used instead where fire precautions are specified. The Sand Trap Louvre is designed to remove the bulk of airborne sand and dust from inlet air in dry and sandy climates whilst maintaining airflow. The double blade design evacuates the sand from the base of the louvre via slots, keeping maintenance to a minimum and ensuring airflow under all conditions. The Design and Innovation Team who ensure the Wozair Group remain at the cutting edge of innovation in their market, are delighted with the improved efficiency of the products, all of which remain fully compliant with the latest certifications and international requirements. If you would like more information about either of the products or would like to speak with one of our specialists to discuss your requirements, then please get in touch –

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  • Wozair Group to Exhibit at ADIPEC

    Wozair Group to Exhibit at ADIPEC

    The Wozair Group are delighted to be exhibiting at this years' show

    The Abu Dhabi International Petroleum Exhibition and Conference is a world class business forum where oil and gas professionals create partnerships, do business and identify strategies that will influence the industry for years to come. With over 110,000 trade professional attending and over 2,200 companies exhibiting, it’s the perfect opportunity for the Wozair Group to showcase our range of products and innovations. If you would like to arrange a meeting with one of our experts during the show, then please get in touch – The Wozair Group look forward to welcoming you in Abu Dhabi from 12-15 November in Hall 15, Stand 15,550.

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  • Jet Secure Largest Order Yet

    Jet Secure Largest Order Yet

    Jet Environmental Secure Biggest Order to Date

    Jet Environmental Systems has been successful in securing its biggest order since starting in 1981! With an order value of £3.5m, Hive revenue is bigger than many recent full year turnovers. Hive is the project name for a multi chamber, multi temperature automated warehouse for Nestle, the world’s largest food and beverage company with more than 2000 brands. The warehouse will be operated by XPO Logistics and built by Winvic Construction. Jet who are part of the Wozair Group, is responsible for installing temperature and humidity control for all of the internal spaces. Cooling will be provided by chiller equipment supplied by Johnson Controls, specified by Jet to manage the extremely tight environmental tolerances required by the customer. The project is located adjacent to East Midlands airport, commencing in September and concluding early in 2019.

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  • BTA for the Jules Horowitz Reactor

    BTA for the Jules Horowitz Reactor

    Wozair Limited have been selected to manufacture Blast Protection Dampers for the Jules Horowitz Reactor (RHJ) which is currently under construction at Cadarache in Southern France. The RJH is a Material Test Reactor (MTR) named after the 20th century French nuclear scientist Jules Horowitz and is expected to begin operation in 2021. The reactors construction was recommended by ESFRI as a replacement for the European Union’s existing materials testing reactors, which were all built in the 1960’s, and are expected to reach the end of their service lives by 2020. Blast Tube Array (BTA) will be provided for the programme in both single and modular sizes of up to 2440W/1300H and 2500W/1000H. The dampers are located on the MVK and MVL backup networks between the external AHU and between the exhaust fans and external fans. Blast systems will also be included on the fresh air ducting and exhaust of cooling units EIS2. The Wozair BTA is a technical revolution in blast protection, addressing several technical challenges whilst providing improved safety and protection. Years of research and development have resulted in an elegant philosophy to wave attenuation that breaks down the blast overpressure in a static device. The result is a lower pressure drop, no moving parts and maintenance free operational lifetime in an extremely cost-efficient product. Wozair Limited will be providing full documentation in dual-language for the project to meet French standards with definition and follow up folders for quality, traceability and workers qualifications. Documentation for the qualification of the BTA under the project conditions will also be provided. Wozair are thrilled to be a part of the project which is the largest new platform for irradiation experiments in support of Generation II and III reactors, Generation IV technologies, and radioisotope production.

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  • Wozair (USA) Accreditation

    Wozair (USA) Accreditation

    Wozair receive Buy American and Buy American accreditation at their USA facility in March this year

    Wozair are delighted to have received Buy America and Buy American accreditation in March this year at their USA facility, enabling them to bid and win their first project under this scheme for designing and manufacturing of bespoke heating, ventilating, and air conditioning (HVAC) components for the Staten Island ferries in New York City. The project consists of manufacturing a range of Fire Dampers, Blast Dampers and Control Dampers for 3 x 320ft vessels. The compliance has created a host of opportunities for the company who also have manufacturing facilities in Singapore, Malaysia, South Korea, the USA as well as their primary base in the UK. The Buy America Act is the name for a group of domestic content restrictions that attach to specific funds administered by the American Department of Transportation (DOT) and is part of the Surface Transportation Assistance Act of 1982. Separate and distinct from the Buy America Act is the Buy American Act, passed in congress in 1933 which only applies to “federal” procurement. It does not apply to DOT funded state/local projects because, while the source of the money for those projects is federal, such purchases are not made directly by the federal government. Both Acts seek to increase transparency and ensure federal agencies prioritise purchase of American-made goods in compliance with the existing law. It enables Wozair to bid for jobs directly on the US government portal. The penalties for non-compliance are serious and include civil or criminal False Claims Act Violations, suspension or debarment. Wozair are currently bidding for a number of exciting projects under the legislation which they are hoping to win and expand their client portfolio.

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  • Fire Protection Systems

    Fire Protection Systems

    Fire in the hole! Wozair are proud to announce our range of pre-engineered fire damper solutions, which can be delivered more quickly and cost-effectively than bespoke equipment. Contact us today for more information.

    At Wozair we have decades of experience constructing bespoke fire damper solutions to suit a range of scenarios across different sectors. Over this time we've been able to develop configurations and design protocols which allow us to construct pre-engineered solutions to suit 80% of customer requirements. These packages can be quoted for more quickly, delivered more quickly and installed more cost-effectively than anything else on the market. Contact us today if you're interested in learning more.  

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  • Cruise Control

    Cruise Control

    We have been developing brand new cabin units, of which there are now five variations to suit different requirements and use cases.

    Wozair Cabin Unit Ventilation products are industry-leading in terms of quality, durability and performance. They are constructed from galvanised steel, and we install them with a manual lever for damper adjustment as standard. Depending on the mode, they have an airflow of 200/500 m3/h. We also offer an optional heater with PWN or ON/OFF management system, and a pressure dependent or independent operation system. Our engineering has delivered Cabin Unit Ventilation products that are far quieter, and offer lower pressure drop, than you'll find elsewhere.They are available in five variations to suit different use cases. See an overview of them below. B MAR LS: Single duct cabin unit, Manual type. For installation in the ceiling. B MAR LL / B MAR: Single duct cabin unit, Manual type. B MAR 230: Single duct cabin unit, Manual type. Heater option available, with PWN or ON / OFF management system. B MAR VAV: Automatic single cabin unit with pressure dependent or independent operation system. Air flow up to 500m3/h depending on model. Constructed from galvanised steel with air connection to DN 100 / 200. Hygienic mineral wool certified to VDI 6022 for plenum insulation. All models meet B15 RINA Certificate / USCG Approval. For further information: Contact Us

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  • Blast Proof

    Blast Proof

    Introducing the Wozair Blast Tube Array - our patented blast protection unit with no moving parts and no maintenance required. The ultimate in blast safety. Contact Us about the extremely cost effective product today at any of our Global Offices' today.

    Blast Tube Array Blast Tube Array technology remains maintenance free The Wozair Blast Tube Array (BTA) is a genuine technological revolution. It applies elegant, creative design to address some long-standing technical challenges and does so without any moving parts, so it's effectively maintenance free. Our BTA is patented, fully verified, tested and completely unrivalled. Contact us today to find out more.

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